A money market account is a hybrid between a savings account and a checking account
A money market account (MMA) is a deposit account that pays interest on your balance, usually higher than a regular savings account, but comes with restrictions on how often you can withdraw money. You get a debit card or checkbook to access your funds, but the bank limits the number of withdrawals you can make each month—typically six, though this varies by bank and has loosened since 2020. The tradeoff is that your money sits in an account insured by the FDIC (up to $250,000 per depositor, per bank), earns interest, and remains accessible without the lock-in period of a certificate of deposit.
The interest rate on a money market account fluctuates with the federal funds rate set by the Federal Reserve. When rates rise, your MMA rate usually rises within weeks or months. When rates fall, your rate falls too. This means the rate you see advertised today will not be the rate you earn next year—or even next month. Banks compete on rates, so the highest-paying MMA at one bank might offer 4.5% while another offers 3.8%, even on the same day.
Key Takeaways
- Money market accounts pay interest that changes with market rates, and the rate your bank advertises today may be lower or higher in three months.
- You can withdraw money only a limited number of times per month (usually six), and exceeding that limit triggers a fee or account closure at some banks.
- Your deposits are FDIC-insured up to $250,000, so your principal is protected even if the bank fails.
- Money market accounts work best for money you need to keep liquid but do not plan to touch frequently, such as an emergency fund or short-term savings goal.
How the withdrawal limit works in practice
Most banks allow six withdrawals or transfers out of a money market account per month. This includes debit card purchases, checks written, ACH transfers, and wire transfers—but not ATM withdrawals or deposits. If you exceed six, the bank may charge a fee (usually $10 to $25 per excess withdrawal), convert your account to a savings account, or close the account entirely. The rules vary by bank, so read your account agreement before you open one.
The six-withdrawal limit came from a Federal Reserve regulation that was suspended in 2020 during the pandemic, but many banks kept the limit anyway because it reduces their operational costs. Some banks have removed the limit entirely, while others enforce it strictly. If you think you will need to withdraw money more than six times a month, a money market account is not the right tool—a regular checking account is cheaper and simpler.
Interest rates and how they compare to other accounts
Money market account rates track the federal funds rate, which the Federal Reserve adjusts based on economic conditions. When the Fed raises rates, banks raise MMA rates to compete for deposits. When the Fed cuts rates, MMA rates fall. The rate you earn depends on the bank's strategy and how much competition they face in your area.
Online banks typically offer higher rates than brick-and-mortar banks because they have lower overhead costs. A national online bank might offer 4.5% APY while a local credit union offers 3.2% on the same day. The difference compounds over time: $10,000 earning 4.5% for one year grows to $10,450, while the same amount at 3.2% grows to $10,320—a $130 difference. Shop around before opening an account, and check rates again every few months, because switching to a higher-paying bank might make sense if the gap widens.
Fees that eat into your interest earnings
Money market accounts come with several possible fees. An excess withdrawal fee (usually $10 to $25) applies when you exceed your monthly withdrawal limit. A monthly maintenance fee (typically $5 to $15) may apply if your balance falls below a minimum, though many online banks waive this. Some banks charge an inactivity fee if you do not make a deposit or withdrawal for a set period, usually six months to a year.
Read the fee schedule before you open an account. A bank advertising 4.5% APY but charging a $10 monthly maintenance fee is actually paying you less than a bank offering 4.2% with no fees. Calculate the real cost: if you keep $5,000 in the account, a $10 monthly fee costs you $120 per year, which is 2.4% of your balance—wiping out most of the interest gain. Online banks and credit unions tend to have lower or no fees, which is one reason their rates are more competitive.
When a money market account makes sense
A money market account works best for money you want to keep safe and earning interest but do not plan to touch often. Common uses include an emergency fund (three to six months of expenses), a down payment fund you are building over one to two years, or a buffer for irregular expenses like car insurance or property taxes. The FDIC insurance protects your principal, and the interest rate beats a regular savings account.
A money market account does not work well if you need to make frequent withdrawals, if you want to earn the highest possible return (a CD or Treasury bill might pay more), or if you need the money in the next few weeks (rates are too low to matter for short time horizons). It also does not work if you are trying to build credit—money market accounts do not report to credit bureaus the way credit cards or loans do.
How to open a money market account and what to watch for
Opening a money market account takes 10 to 15 minutes online or in person. You will need a government-issued ID, your Social Security number, and proof of address (a recent utility bill or bank statement). The bank will run a soft credit check and verify your identity through ChexSystems, a database that tracks banking history. If you have unpaid overdrafts or fraud flags at other banks, you may be denied.
Before you open an account, compare rates across at least three banks using sites like Bankrate or DepositAccounts, which update daily. Check the fee schedule and withdrawal limits. Read the account agreement, especially the section on excess withdrawals and account closure. Some banks close accounts without warning if you exceed the withdrawal limit repeatedly, which can damage your banking record. Once you open the account, set a calendar reminder to check the rate every three months—if your bank's rate falls significantly below competitors, moving your money to a higher-paying bank is usually free and takes a few days.
Money market accounts versus money market funds
Do not confuse a money market account (a bank deposit account) with a money market fund (an investment). A money market account is FDIC-insured, earns a fixed interest rate set by the bank, and your principal is protected. A money market fund is not insured, invests your money in short-term debt securities, and the value can fluctuate slightly.
Money market funds are offered by brokerages and investment firms, not banks. If you see "money market" in a brokerage account, it is a fund, not an account. For most people saving for a specific goal or emergency fund, a money market account is simpler and safer because your money does not move and your balance does not change based on market conditions.
Frequently Asked Questions
Can I use a debit card with a money market account?
Yes, most money market accounts come with a debit card, but each debit card purchase counts toward your monthly withdrawal limit. If you use the card six times and then try to write a check, the check may bounce or trigger a fee. Use the debit card sparingly if you want to stay under the limit.
What happens if I exceed the withdrawal limit?
The bank will charge a fee (usually $10 to $25 per excess withdrawal) or convert your account to a savings account. Some banks close accounts that repeatedly exceed the limit. Check your account agreement to see your bank's specific policy before you open the account.
Is my money safe in a money market account?
Yes, up to $250,000 per depositor, per bank. The FDIC insures money market accounts the same way it insures checking and savings accounts. If the bank fails, the FDIC pays you back. If you have more than $250,000, split it across multiple banks to keep all of it insured.
Can the interest rate on my money market account go down?
Yes. The rate your bank pays is not locked in. When the Federal Reserve cuts interest rates or your bank decides to lower rates to reduce costs, your MMA rate will fall. This is why it is worth checking rates every few months and switching banks if a competitor offers significantly more.
How is a money market account different from a savings account?
A money market account usually pays higher interest than a savings account, but comes with withdrawal limits and may have higher minimum balance requirements. A savings account is simpler—no withdrawal limits, lower minimums—but earns less interest. For money you do not touch often, an MMA pays more. For money you access frequently, a savings account is easier.